21085952

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2657}}^1$

素因数の和:2704

約数の個数: 36

約数和(自身を含む): 43463616

約数和(自身を除く): 22377664

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2657, 3968, 5314, 7936, 10628, 21256, 42512, 82367, 85024, 164734, 170048, 329468, 340096, 658936, 680192, 1317872, 2635744, 5271488, 10542976, 21085952]

約数ペア:

[(1, 21085952), (2, 10542976), (4, 5271488), (8, 2635744), (16, 1317872), (31, 680192), (32, 658936), (62, 340096), (64, 329468), (124, 170048), (128, 164734), (248, 85024), (256, 82367), (496, 42512), (992, 21256), (1984, 10628), (2657, 7936), (3968, 5314)]